A researcher wants to compare grades for psychology students versus business students.He collects data from 108 psychology majors and 123 business majors.

Questions:

1. What are your hypotheses?

2. Is this an experiment or observational study?

3. Is his Independent Variable categorical or continuous?

4. What type of statistical test (i.e., the specific type of t-test or ANOVA) would he use to compare the classes?

5. What are the degrees of freedom for that test